Struct tss_esapi::utils::PcrSelections

pub struct PcrSelections { /* fields omitted */ }

A struct representing pcr selections

The minimum number of octets allowed in a TPMS_PCR_SELECT.sizeOfSelect is not determined by the number of PCR implemented but by the number of PCR required by the platform-specific specification with which the TPM is compliant or by the implementer if not adhering to a platform-specific specification.

Implementations

impl PcrSelections

pub fn len(&self) -> usize

Function for retrieiving the number of banks in the selection

pub fn is_empty(&self) -> bool

Returns true if the selection is empty.

pub fn subtract(&mut self, other: &Self) -> Result<()>

Removes items in other from `self.

Arguments

• other - A PcrSelections containing items that will be removed from self.

Constraints

• Cannot be called with other that contains items that are not present in self.

• Cannot be called with other that has a size_of_select that is different from the one in self.

Errors

• Calling the method with other that contains items not present in self will result in an InvalidParam error.

• Calling the method with other that contains a size_of_select that is different then the one in self will result in a InvalidParam error.

Examples

use tss_esapi::utils::{PcrSelectionsBuilder, PcrSlot, algorithm_specifiers::HashingAlgorithm};
// pcr selections
let mut pcr_selections = PcrSelectionsBuilder::new()
    .with_size_of_select(Default::default())
    .with_selection(HashingAlgorithm::Sha256, &[PcrSlot::Slot0, PcrSlot::Slot8])
    .build();

// Another pcr selections
let other = PcrSelectionsBuilder::new()
    .with_size_of_select(Default::default())
    .with_selection(
        HashingAlgorithm::Sha256, &[PcrSlot::Slot0],
    )
    .build();
pcr_selections.subtract(&other).unwrap();
assert_eq!(pcr_selections.len(), 1);

Trait Implementations

impl Clone for PcrSelections

fn clone(&self) -> PcrSelections

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PcrSelections

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for PcrSelections

fn default() -> PcrSelections

Returns the "default value" for a type.

impl Eq for PcrSelections

impl From<PcrSelections> for TPML_PCR_SELECTION

fn from(pcr_selections: PcrSelections) -> TPML_PCR_SELECTION

Performs the conversion.

impl PartialEq<PcrSelections> for PcrSelections

fn eq(&self, other: &PcrSelections) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &PcrSelections) -> bool

This method tests for !=.

impl StructuralEq for PcrSelections

impl StructuralPartialEq for PcrSelections

impl TryFrom<TPML_PCR_SELECTION> for PcrSelections

type Error = Error

The type returned in the event of a conversion error.

fn try_from(tpml_pcr_selection: TPML_PCR_SELECTION) -> Result<PcrSelections>

Performs the conversion.